CN1798655A - Ink jet printer using UV ink - Google Patents
Ink jet printer using UV ink Download PDFInfo
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- CN1798655A CN1798655A CNA2004800148840A CN200480014884A CN1798655A CN 1798655 A CN1798655 A CN 1798655A CN A2004800148840 A CNA2004800148840 A CN A2004800148840A CN 200480014884 A CN200480014884 A CN 200480014884A CN 1798655 A CN1798655 A CN 1798655A
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- uvled
- ink
- display unit
- ultraviolet
- jet printer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
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Abstract
A UVLED (62) or a UVLED array unit (64) is employed in the UV-ray emitting body of a UV-ray irradiating means (60) for curing a UV-ink drop, shot at the surface of print media (50) mounted on a platen (20) from the ink jet head (30) of an ink jet, by irradiating it with UV-rays. Power consumption of the UV-ray irradiating means (60) is suppressed greatly, the UV-ray irradiating means (60) is reduced in size and weight or simplified, waiting time of the UV-ray irradiating means (60) is eliminated when the UV-ray emitting body is lighting, or generation of ozone is prevented when the UV-ray emitting body is lighting.
Description
Technical field
The present invention relates to a kind of ink-jet printer that sprays the use UV China ink of the type that the UV China ink (China ink that is cured by irradiation ultraviolet radiation) of ultraviolet hardening drips from ink jet-print head.
Background technology
Known ink-jet printer is as follows: spray ultraviolet hardening UV ink droplet from the nozzle that is arranged in the inkjet printing subfacies to dielectric surface, and nozzle along with X-Y (in length and breadth) direction of cylinder surface almost parallel, relatively move in print media (being the recording medium) top that is loaded on the cylinder hereinafter to be referred as medium.
In this printer, have spraying attached to the UV ink droplet irradiation ultraviolet radiation of dielectric surface, and solidify the UV irradiation unit of this UV ink droplet from this ink jet-print head.And, by this UV irradiation unit,, thereby the UV ink droplet is fixed on the medium this UV ink droplet of instantaneous solidification attached to the UV ink droplet irradiation ultraviolet radiation of dielectric surface.Also have, prevent UV ink droplet attached to this dielectric surface around this attachment position the medium expansion and form the big fuzzy ink dot of diameter at this dielectric surface.
According to ink-jet printer with this UV irradiation unit, can prevent the medium expansion of UV ink droplet around this attachment position attached to this dielectric surface, and on this dielectric surface, can print with a plurality of UV ink dots of minor diameter and arrange the not clear and distinct image or the literal of infiltration that forms.
Also have, according to the ink-jet printer that uses the UV China ink, even do not form black receiving layer at various dielectric surfaces such as plastic plate, metallic plate, glass plate, paper, cloth, can utilize the UV China ink directly to print image or literal yet at these these various dielectric surfaces.
But, in the ink-jet printer of in the past use UV China ink, on the luminescence-utraviolet body of its UV irradiation unit, use large-scale high-pressure mercury-vapor lamp or metal halide lamp specially.
For this reason, the UV irradiation unit that holds this large-scale luminescence-utraviolet body becomes large-scale device.Its result, the ink-jet printer of use UV China ink itself also becomes needs big spacial large-scale printer.
Also have, high-pressure mercury-vapor lamp or metal halide lamp in this luminescence-utraviolet body big the time, produce a large amount of ozone to the consumed power of electricity.
In addition, high-pressure mercury-vapor lamp or metal halide lamp in this luminescence-utraviolet body will be lighted the stand-by period that needs more than 15 minutes fully., use in the printer of UV China ink for this reason, have to make the high-pressure mercury-vapor lamp of this UV irradiation unit or metal halide lamp to be in the state of lighting a lamp all the time.Meanwhile, use in the UV irradiation unit of high-pressure mercury-vapor lamp or metal halide lamp the shutter of the peristome that have to be provided with the cover that covers around this luminescence-utraviolet body, opens and closes this cover and the opening and closing device of this shutter in the luminescence-utraviolet body.And, have to open and close by the peristome of shutter to the cover that held this luminescence-utraviolet body, the ultraviolet ray of penetrating from this luminescence-utraviolet body is shone to the outside of cover, perhaps stop the ultraviolet ray to penetrate from this luminescence-utraviolet body irradiation to the outside of cover., use in the printer of UV China ink, the UV irradiation unit also will add above-mentioned cover, shutter and fast device for opening/closing door except the large-scale luminescence-utraviolet body of needs for this reason, thereby this UV irradiation unit becomes large-scale very heavy device.Its result if this UV irradiation unit and ink jet-print head become one, relatively moves above the medium that is loaded on the cylinder along the X-Y direction, and the mobile device of this ink jet-print head just becomes the device of the large-scale a large amount of power of loss so.Similarly, if UV irradiation unit and ink jet-print head relatively move above the medium that is loaded on the cylinder along the X-Y direction respectively, the mobile device of UV irradiation unit just becomes the device of the large-scale a large amount of power of loss so.
Goal of the invention
The object of the invention is to provide a kind of can solve ink-jet printer (hereinafter to be referred as ink-jet printer) such problem, that use the UV China ink.
In order to reach such purpose, ink-jet printer of the present invention has used UVLED (Ultra Violet Light Emitting Diode in the luminescence-utraviolet body of UV irradiation unit; The abbreviation of ultraviolet ray emitting element) or UVLED display unit (a plurality of UVLED arrange the material that forms), wherein the UV irradiation unit is to spraying from the ink jet-print head that relatively moves above the medium that is loaded on the cylinder along the X-Y direction with the cylinder surface almost parallel and being loaded into the UV ink droplet irradiation ultraviolet radiation of the dielectric surface on the cylinder attached to this.
UVLED is recently by the high performance ultraviolet ray emitting element of Nichia Chemical Industries, Ltd's exploitation, and the consumed power when it is lit a lamp compared with aforesaid high-pressure mercury-vapor lamp and metal halide lamp, only is about 1/20th minimum.Also have,, become small-sized, light-type significantly compared with aforesaid high-pressure mercury-vapor lamp and metal halide lamp.And then ozone takes place in aforesaid high-pressure mercury-vapor lamp and metal halide lamp when lighting a lamp, but UVLED ozone can not take place when lighting a lamp yet.In addition, UVLED is by increasing and decreasing control to the magnitude of current that flows into, and can have stand-by period ground and in time do not light a lamp repeatedly and close lamp.
, in the luminescence-utraviolet body of UV irradiation unit, use in the ink-jet printer of the present invention of this UVLED or UVLED display unit for this reason, can provide the consumed power of the luminescence-utraviolet body of having controlled this UV irradiation unit and energy-saving printer that it is tailed off.And, can carry out significantly miniaturization and to this UV irradiation unit.Thereby, can carry out miniaturization to the printer that possesses this UV irradiation unit and dwindle its space of occupying.Also have, UV irradiation unit and ink jet-print head become with one, during situation about above being loaded into the medium of cylinder, relatively moving along the X-Y direction, the mobile device of the ink jet-print head that moves with this UV irradiation unit can be made the few midget plant of consumed power with becoming one.Similarly, UV irradiation unit and ink jet-print head are provided with respectively, during situation about relatively moving above being loaded into the medium of cylinder along the X-Y direction, the mobile device of this UV irradiation unit can be made the few midget plant of consumed power.And then, when the display unit of the UVLED of UV irradiation unit or UVLED is lit a lamp, can prevent from the UVLED of this luminescence-utraviolet body or the display unit generation ozone of UVLED.Thereby, the non-harmful printer that ozone does not take place can be provided.In addition, increase and decrease control, can make the display unit of UVLED or UVLED have stand-by period ground and in time not light a lamp repeatedly and close lamp by the magnitude of current to the display unit of the UVLED that flows into the UV irradiation unit or UVLED.Its result, can eliminate in the UV irradiation unit be provided with from the UV irradiation unit to the external irradiation ultraviolet ray of UV irradiation unit or stop from the UV irradiation unit to the external irradiation ultraviolet ray of UV irradiation unit be purpose, cover cover around the luminescence-utraviolet body, open and close necessity of the opening and closing device of the shutter of peristome of this cover and this shutter.Thereby, can carry out miniaturization and, simplification to the UV irradiation unit.
In the ink-jet printer of the present invention, the control device that the electric current of the display unit of the UVLED that flows into the UV irradiation unit or UVLED is increased and decreased control is set, and by this control device, the electric current of the display unit of the UVLED that flows into the UV irradiation unit or UVLED is increased and decreased.And, according to the moment and quantity attached to the UV ink droplet of dielectric surface, can be comfortable and positively adjust this UVLED or UVLED display unit luminescence-utraviolet constantly, the luminescence-utraviolet intensity and the luminescence-utraviolet time of the display unit of this UVLED or UVLED.
Use in the luminescence-utraviolet body of UV irradiation unit in the ink-jet printer of the present invention of display unit of UVLED, with ultraviolet a plurality of each UVLED that roughly penetrate isodose that are arranged on the display unit of this UVLED, with the same plane of cylinder surface almost parallel on, dispose on each summit of the onesize positive triangle of seamlessly arranging respectively, make the same distance that is spaced apart between this each adjacent UVLED.And, with alignment arrangements and the same plane of this cylinder surface almost parallel on the display unit of UVLED in ejaculation roughly the distance between the ultraviolet a plurality of adjacent UVLED of isodose make same distance, thereby with the same plane of cylinder surface almost parallel on whole positions on make these a plurality of UVLED be in the state that is configured with uniform density.Meanwhile, a plurality of each UVLED of this UVLED display unit will be arranged in, with the same plane of cylinder surface almost parallel on carry out alignment arrangements, thereby these a plurality of each UVLED are in from the dielectric surface distance that is loaded into cylinder roughly with equidistant state.And, to a plurality of each UVLED from the display unit that is arranged in this UVLED penetrate and to load with cylinder on dielectric surface carry out homogenising to the ultraviolet amount of very big width ground irradiation in length and breadth, make it roughly equal on dielectric surface whole positions partly that this ultraviolet ray is mapped to.Also have, the ultraviolet ray of roughly shining equably to the very big in length and breadth width ground of dielectric surface by penetrating from the display unit of this UVLED, to the whole ink droplets that adhere to the regulation Pareto diagram on dielectric surface each position partly that is mapped in this ultraviolet ray, carrying out moment solidifies fully, and it can positively be fixed on the medium.
A plurality of each UVLED of display unit that ultraviolet UVLED take place or be arranged in UVLED of UV irradiation unit are along with the process of time, because of the heat of itself launching becomes high temperature gradually, the ultraviolet amount that penetrates from the display unit of this UVLED or UVLED is decayed gradually.Thereby, can not shine the ultraviolet ray of dielectric surface by display unit from UVLED or UVLED, to carry out moment to solidify fully attached to this surperficial ink droplet it is fixed on the medium.
Therefore, in order to solve such problem, in the ink-jet printer of the present invention, have sniffer and adjusting device, the UVLED during the ultraviolet ray of detection UV irradiation unit takes place or be arranged in the ejaculation temperature of at least more than one UVLED among the ultraviolet UVLED of isodose roughly of the display unit of UVLED; Adjusting device is according to the variations in temperature of the UVLED that arrives by this detection, this UVLED of subtend or be arranged in the electric energy that a plurality of each UVLED of the display unit of UVLED supply with and increase and decrease control, and be not subjected to ultraviolet ray in taking place UVLED or be arranged in the influence of temperature variation of a plurality of each UVLED of the display unit of UVLED, make this UVLED or be arranged in the ultraviolet amount of radiation that a plurality of each UVLED of the display unit of UVLED penetrate to remain unchanged.Thereby, according to by detection to ultraviolet ray in taking place UVLED or be arranged in the variation of temperature of a plurality of each UVLED of the display unit of UVLED, by this UVLED of adjusting device subtend or be arranged in the electric energy that a plurality of each UVLED of the display unit of UVLED supply with and increase and decrease.Thereby, be not subjected to ultraviolet ray in taking place UVLED or be arranged in the influence of variations in temperature (temperature risings) of a plurality of each UVLED of the display unit of UVLED, the ultraviolet amount of radiation of a plurality of each UVLED ejaculation that makes this UVLED or be arranged in the display unit of UVLED remains unchanged.
Perhaps, has the UVLED during ultraviolet ray taken place or be arranged in the ejaculation cooling device that cools off of ultraviolet a plurality of each UVLED of isodose roughly of the display unit of UVLED.And, UVLED in by cooling device ultraviolet ray being taken place or a plurality of each UVLED that are arranged in the display unit of UVLED continue to cool off, with this UVLED or be arranged in the heat that a plurality of each UVLED of the display unit of UVLED emit, continue to reject heat to the outside of this UVLED.Thereby, can prevent this UVLED or be arranged in a plurality of each UVLED of the display unit of UVLED, the heat of emitting because of itself becomes high temperature gradually, and the ultraviolet amount of radiation that the display unit of this UVLED or UVLED penetrates decays gradually.
In addition, be not subjected to the restriction of effluxion, make from the display unit of this UVLED or UVLED and penetrate and remain constant the ultraviolet amount that dielectric surface shines.And, by not being subjected to time restriction ground to penetrate a certain amount of and lasting ultraviolet ray that dielectric surface is shone all the time from the display unit of this UVLED or UVLED, to ink droplet, do not carry out moment curing fully with not being subjected to time restriction all the time and it can positively be fixed on this medium attached to dielectric surface.
To the ultraviolet irradiation amount that medium shines, 200～1500mJ/cm2 is suitable amount.
Description of drawings
Fig. 1 is the vertical view of the general structure of expression ink-jet printer of the present invention.
Fig. 2 is the vertical view of the general structure of expression ink-jet printer of the present invention.
Fig. 3 is the side view of the general structure of expression ink-jet printer of the present invention.
Fig. 4 is the structure key diagram of array element of the UVLED of ink-jet printer of the present invention.
Fig. 5 is the structure key diagram of the sniffer periphery of ink-jet printer of the present invention.
Fig. 6 is the structure key diagram of the cooling device periphery of ink-jet printer of the present invention.
The specific embodiment
Below, with reference to the accompanying drawings, describe at preferred forms of the present invention.
Among Fig. 1 to Fig. 3, represent the preferred forms of ink-jet printer of the present invention.
Be illustrated in being configured to of printer among Fig. 1 and Fig. 2: ink jet-print head 30 along with X-Y (in length and breadth) direction of the surperficial almost parallel of cylinder 20, be loaded into medium 50 on the cylinder 20 above relatively move, and, eject and be attached at medium 50 lip-deep UV ink droplet irradiation ultraviolet radiations by 60 pairs of nozzles 32 below being arranged in ink jet-print head 30 of UV irradiation unit, and this UV ink droplet is cured, thereby can on these medium 50 surfaces, print image or/and the literal that constitutes by a plurality of UV arrays of dots on medium 50 surfaces.
Being configured to of ink jet-print head 30: along the guide rail 80 of the Y direction that is erected at cylinder 20 tops, be loaded into medium 50 on the cylinder 20 on direction Y (transverse direction) move.
On the other hand, being configured to of medium 50: as shown in Figure 3, medium 50 is sandwiched in and the feeding roller 92 of the carrying device 90 of the below of cylinder 20 and the configuration of top subtend and compressing between the roller 94, by making feeding roller 92, thereby cylinder 20 is moved in X (vertically) direction to directions X (direction of arrow among the figure) rotation.Thereby have make ink jet-print head 30 along the X-Y direction be loaded into medium 50 on the cylinder 20 above the structure that relatively moves.
Concretely, in ink-jet printer as shown in Figure 1, UV irradiation unit 60 has following structure, both sides and ink jet-print head 30 at ink jet-print head 30 are made as one, and make these UV irradiation units 60 and ink jet-print head 30 integratedly along the X-Y direction be loaded into medium 50 on the cylinder 20 above relatively move, and, eject and attached to medium 50 lip-deep UV ink droplets from ink jet-print head 30 by 60 pairs of the UV irradiation units of ink jet-print head 30 both sides, just be presented on the lip-deep UV ink droplet irradiation ultraviolet radiation of the medium 50 on its left side or right side successively attached to below from the ink jet-print head 30 that moves to the Y direction.
On the other hand, in ink-jet printer as shown in Figure 2, have UV irradiation unit 60 and ink jet-print head were arranged in 30 minutes, and along the auxiliary guide rail 82 of the Y direction that is set up in cylinder 20 tops, to the Y direction be loaded into medium 50 on the cylinder 20 above the structure that moves, and, eject and attached to medium 50 lip-deep UV ink droplets from ink jet-print head 30 by 60 pairs of UV irradiation units that moves in ink jet-print head 30 the place aheads to the Y direction, just attached to by aforementioned carrying device 90 on the cylinder 20 successively from the lip-deep UV ink droplet irradiation ultraviolet radiation of the medium 50 sent towards the directions X in ink jet-print head 20 the place aheads below the mobile alignment of ink jet-print head 30.
Above structure is identical with the ink-jet printer in the past of narration once, and still, in ink-jet printer shown in Figure 1, the luminescence-utraviolet body of its UV irradiation unit 60 has adopted UVLED62.On the other hand, in ink-jet printer shown in Figure 2, the luminescence-utraviolet body of its UV irradiation unit 60 has adopted the array element (being made of a plurality of UVLED arrangements) 64 of UVLED.At UVLED62 or be arranged in UVLED62 in the array element 64 of UVLED, the high power ultraviolet ray emitting element that adopts aforesaid Nichia Chemical Industries, Ltd to make.Concretely, be made as the UVLED62 of the UV irradiation unit 60 of one in the ink-jet printer of Fig. 1 in the both sides of ink jet-print head 30, the high power ultraviolet ray emitting element NCCU001E (trade name) that has adopted Nichia Chemical Industries, Ltd to make, it is for can send the ultraviolet light-emitting component that wavelength is about 380nm.On the other hand, the UVLED62 that arranges on the array element 64 of the UVLED of the UV irradiation unit 60 of the ink-jet printer in Fig. 2, the high power ultraviolet ray emitting element NCCU033E (trade name) that has adopted Nichia Chemical Industries, Ltd to make, it is for can send the ultraviolet light-emitting component that wavelength is about 365nm.In addition, these UVLED62 also can adopt the UVLED that other companies in addition of Nichia Chemical Industries, Ltd make.Also have, the luminescence-utraviolet body of the UV irradiation unit 60 that is located at ink jet-print head 30 both sides among Fig. 1 also can adopt the array element of UVLED.Equally, separate the luminescence-utraviolet body of the independent UV irradiation unit 60 that is provided with ink jet-print head 30 among Fig. 2, also can adopt large-scale UVLED.
Thereby, in the ink-jet printer shown in these Fig. 1 and Fig. 2, the characteristic of UVLED62 that performance is used in this UV irradiation unit 60 or the array element 64 of UVLED, and the energy-saving ink-jet printer of the consumed power of the luminescence-utraviolet body that has reduced this UV irradiation unit 60 can be provided.Also have, this UV irradiation unit 60 is carried out miniaturization and significantly, thereby can carry out miniaturization, downsizing the ink-jet printer that possesses this UV irradiation unit 60.Thereupon, UV irradiation unit 60 is made as one ink jet-print head 30 mobile device or carry out miniaturization with mobile device that ink jet-print head 30 separates the independent UV irradiation unit 60 that is provided with, thereby can reduce its consumed power.And then, when lighting the array element 64 of the UVLED62 that uses in the luminescence-utraviolet body of UV irradiation unit 60 or UVLED, prevent from ozone to take place, thereby the non-harmful ink-jet printer that ozone does not take place can be provided from this UV irradiation unit 60.And, increase and decrease control by electric current to the array element 64 of the luminescence-utraviolet body UVLED62 that flows into UV irradiation unit 60 or UVLED, thereby, can make the array element 64 of this UVLED62 or UVLED, no stand-by period ground lights a lamp repeatedly immediately or closes lamp.And, the shutter of the peristome that need not on UV irradiation unit 60, to be provided with the cover that covers around the luminescence-utraviolet body, opens and closes this cover and the opening and closing device of shutter, thus can carry out miniaturization and, simplification to UV irradiation unit 60.
In these ink-jet printers, as depicted in figs. 1 and 2, control device 70 can also be set, electronic circuit that it increases and decreases control by the electric current to the UVLED62 that flows into this luminescence-utraviolet body or UVLED display unit 64 etc. constitutes.Also have, by this control device 70, electric current in the display unit 64 of the UVLED62 that flows into UV irradiation unit 60 or UVLED is increased and decreased, thereby, according to the moment ( イ ミ Application グ) and the quantity thereof of UV ink droplet attached to medium 50 surfaces, can to the luminescence-utraviolet of the display unit 64 of this UVLED62 or UVLED constantly, the luminescence-utraviolet intensity and the luminescence-utraviolet time of the display unit 64 of this UVLED62 or UVLED, carry out freedom and adjust accurately.And, to UV ink droplet attached to these medium 50 surfaces, can be on time, be cured in right amount and exactly.
On the luminescence-utraviolet body of UV irradiation unit 60, adopted in the ink-jet printer of UVLED display unit 64, as shown in Figure 4, the display unit 64 of this UVLED can will penetrate roughly ultraviolet a plurality of UVLED62 of isodose, is arranged on the same plane with cylinder 20 surperficial almost parallels and forms.At this moment, can be with a plurality of each UVLED62 that are arranged on the display unit 64 of this UVLED, be configured in each summit of the onesize positive triangle of seamlessly arranging on the same plane with the surperficial almost parallel of cylinder 20 that dots respectively, make the same distance that is spaced apart between each adjacent UVLED62.And, can make a plurality of each UVIED62 on the display unit 64 of this UVLED be on whole positions on the same plane with the surperficial almost parallel of cylinder 20 with roughly uniformly density be configured state the time, a plurality of each UVLED62 on the display unit 64 that is arranged in this UVLED are in from the surface distance that is loaded into the medium 50 on the cylinder 20 with equidistant state.The ultra violet radiation part that is arranged in a plurality of each UVLED62 on the display unit 64 of this UVLED also can be towards the direction of cylinder 20.Thereby the ultraviolet ray that a plurality of each UVLED62 from the display unit 64 that is arranged in this UVLED are shot out shines medium 50 surfaces that are loaded on the cylinder 20 exactly.And, penetrate and the ultraviolet amount that is radiated at the surface of the medium 50 that is loaded into cylinder 20 to width is in length and breadth carried out homogenising for a plurality of each UVLED62 from the display unit 64 that is arranged in this UVLED very widely, make on whole positions on medium 50 surfaces that this ultraviolet ray is mapped to roughly equal.Also have, the ultraviolet ray that the display unit 64 by this UVLED penetrates, whole ink droplets that each position that moment fully is solidificated in medium 50 surfaces has been adhered to the predetermined arrangement pattern, and it can be set on this medium 50 exactly.
In ink-jet printer illustrated in figures 1 and 2, as shown in Figure 5, can also have the ultraviolet ray of surveying UV irradiation unit 60 in taking place UVLED62 or be arranged in the ejaculation sniffer 110 of the temperature of the UVLED62 of at least more than one among ultraviolet a plurality of UVLED62 of isodose roughly on the display unit 64 of UVLED.Sniffer 110 for example can and constitute by the combination of thermocouple sensor and electronic circuit.On the substrate 106 that constitutes with aluminium oxide ceramics or metal etc. that sniffer 110 can be arranged on that UVLED62 is loaded.Here, the reason of surveying the temperature of at least more than one UVLED62 among a plurality of UVLED62 on the display unit 64 that is arranged in UVLED by sniffer 110 is, be arranged in a plurality of each UVLED62 on the display unit 64 of UVLED and have and penetrate the roughly ultraviolet structure of isodose, therefore be speculated as these a plurality of each UVLED62 and rise to roughly same temperature because of the heat of itself launching.Therefore, if survey the temperature of the more than one UVLED62 on the display unit 64 that is arranged in UVLED by sniffer 110, can infer that so the temperature of other UVLED62 on the display unit 64 that is arranged in UVLED is also roughly the same with the temperature of the more than one UVLED62 that detects by sniffer 110.
Meanwhile, UVLED62 during the variations in temperature that can also have the UVLED62 in taking place according to the ultraviolet ray that detects by sniffer 110, subtend should ultraviolet ray take place or be arranged in the adjusting device 120 that electric energy that a plurality of each UVLED62 on the display unit 64 of UVLED supply with increases and decreases.And adjusting device 120 for example can be by to the power circuit of UVLED62 supply of electrical energy, constitute as the electronic control circuit on the electronic circuit that is connected sniffer 110 of the electronic control circuit that this circuit is driven control.
Adjusting device 120 can be for example subtend UVLED62 or be arranged in voltage, electric current, electrical pulse width or electrical pulse width of cloth cycle that a plurality of each UVLED62 on the display unit 64 of UVLED supply with at least more than one control, make UVLED62 or be arranged in ultraviolet amount of radiation that a plurality of each UVLED62 on the display unit 64 of UVLED penetrate not to be subjected to the influence that the temperature of the UVLED62 of this ultraviolet ray in taking place rises and the structure that remains unchanged.
Also have, be accompanied by the ultraviolet ray surveyed by sniffer 110 in taking place UVLED62 or be arranged on the display unit 64 of UVLED ejaculation roughly the temperature of ultraviolet a plurality of each UVLED62 of isodose rise, can pass through adjusting device 120, this UVLED62 of subtend or be arranged in the electric energy that a plurality of each UVLED62 on the display unit 64 of UVLED supply with and increase.And, keep this UVLED62 or be arranged in the ultraviolet amount of radiation that a plurality of each UVLED62 on the display unit 64 of UVLED penetrate constant, and be not subjected to this ultraviolet ray in penetrating UVLED62 or be arranged in the influence that the temperature of a plurality of each UVLED62 on the display unit 64 of UVLED rises.Also have, by from UVLED62 or be arranged in the display unit 64 of UVLED, be not subjected to the influence of effluxion, always with the ultraviolet ray of a certain amount of ejaculation, to ink droplet attached to medium 50 surfaces, be not subjected to the influence of effluxion, always moment solidifies fully, and it can positively be set on this medium 50.
Also have, in ink-jet printer illustrated in figures 1 and 2, replace above-mentioned sniffer 110 and control device 120, as shown in Figure 6, also can possess cooling device 130, UVLED62 during it takes place ultraviolet ray or be arranged on the display unit 64 of UVLED ejaculation roughly ultraviolet each a plurality of UVLED62 of isodose cool off, and keep this UVLED62 or be arranged in the ultraviolet amount of radiation that each a plurality of UVLED62 on the display unit 64 of UVLED penetrates keeping certain.
In cooling device 130, for example, can use the thermoelectric cooling element (among the figure is fin) that is called as fin or so-called Peltier's element etc.As shown in Figure 6, fin or thermoelectric cooling element can be arranged on by the thermal diffusivity that has loaded UVLED62 aluminium oxide ceramics or metal and on the substrate 106 that constitutes preferably.And be by fin or thermoelectric cooling element, the heat that the UVLED62 that is loaded on the substrate 106 can be emitted rejects heat to outside structure expeditiously.
In addition, by cooling device 130, the UVLED62 during ultraviolet ray taken place or be arranged in ejaculation ultraviolet a plurality of each UVLED62 of isodose roughly on the display unit 64 of UVLED proceeds cooling.And, with this UVLED62 or be arranged in the heat that a plurality of each UVLED62 on the display unit 64 of UVLED emit and efficiently and constantly dispel the heat to the outside.Thereby, prevent that the heat that this UVLED62 sends because of itself from becoming high temperature gradually, and the ultraviolet amount of radiation that the UVLED62 that decays gradually penetrates.Also have, by not being subjected to the influence of effluxion, always a plurality of each UVLED62 on the UVLED62 that continues to be cooled with this low-temperature condition or the display unit 64 that is arranged in UVLED are with the ultraviolet ray of a certain amount of ejaculation, be not subjected to the influence of effluxion, always the ink droplet attached to medium 50 surfaces is carried out moment and fully solidify, and it can positively be set on this medium 50.
On the luminescence-utraviolet body of UV irradiation unit 60, used in the ink-jet printer of display unit 64 of UVLED, can utilize jointly as Fig. 4 or formation as shown in Figure 6.
Promptly, under these circumstances, can to from the display unit 64 that is arranged in this UVLED and ultraviolet a plurality of each UVLED62 that penetrate isodose roughly penetrate, and the ultraviolet amount of shining to very big width ground in length and breadth on the surface that is loaded into the medium 50 on the cylinder 20 is carried out homogenising, and make it roughly equal on whole positions on the surface of the medium 50 that this ultraviolet ray is mapped to.
Meanwhile, can prevent amount of ultraviolet irradiation that ultraviolet ray on the display unit 64 of this UVLED a plurality of each UVLED62 in taking place penetrate along with the time through decay gradually.
Also have, on the luminescence-utraviolet body of UV irradiation unit 60, used in the ink-jet printer of display unit 64 of UVLED, can utilize jointly as the formation of Fig. 4 with as Fig. 5 or as one of any formation among Fig. 6.
Promptly, in this case, can a plurality of each UVLED62 from the display unit 64 that is arranged in this UVLED be penetrated, and the ultraviolet amount of shining to very big width ground in length and breadth on the surface of the medium 50 that is loaded into cylinder 20 is carried out homogenising, and make it roughly equal on whole positions on the surface of the medium 50 that this ultraviolet ray is mapped to.
Meanwhile, can prevent to be arranged in amount of ultraviolet irradiation decay gradually that ultraviolet ray on the display unit 64 of this UVLED a plurality of each UVLED62 in taking place penetrate along with the process of time.
Also have, on the luminescence-utraviolet body of UV irradiation unit 60, used in the ink-jet printer of display unit 64 of UVLED62 or UVLED, can utilize jointly as Fig. 5 and as the formation of Fig. 6.
That is, in this case, can positively prevent this ultraviolet ray in taking place UVLED62 or be arranged in amount of ultraviolet irradiation decay gradually that ultraviolet ray on the display unit 64 of this UVLED a plurality of each UVLED62 in taking place penetrate along with the process of time.
Ink-jet printer among the present invention also can be used in following platform-type ink-jet printer, it is on the cylinder of platform-like, with fixing Immobile state load medium, and the ink jet-print head that sprays the UV ink droplet is moved above being loaded in this medium above cylinder along the X-Y direction.
The UVLED that in the luminescence-utraviolet body of ink-jet printer of the present invention, is used, as long as meet the purpose that UVLED is cured, can carry out many variations, for example, can make following structure: a plurality of UVLED are carried out long array and form the display unit of the UVLED of UV irradiation unit in the Y direction of the width that surpasses medium, and make the below of the display unit of this UVLED, move on medium to directions X.And, also the display unit of the UVLED of UV irradiation unit can be arranged on the cylinder top to the fixing state of Y direction.Also have, when small-sized medium such as card are printed, greater than card sizes ground to arranging the display unit that a plurality of UVLED form the UVLED of UV irradiation unit in length and breadth, utilize the display unit of this UVLED thus, can carry out one-step solidification a plurality of UV ink droplets of arranging attached to card face with the regulation Pareto diagram.
The ultraviolet emission wavelength that the UVLED that uses from the ultraviolet lamp of ink-jet printer of the present invention penetrates, as long as can effectively solidify to the UV China ink, just be not limited to certain wavelengths, but, from the purpose of the influence of avoiding indoor light, the UVLED that uses in the ultraviolet lamp of ink-jet printer of the present invention is suitable to be penetrated emission wavelength and is the ultraviolet material below the 410nm.
Utilize possibility on the industry
Ink-jet printer of the present invention can be used in widely to spraying from its ink jet-print head and being attached to The ink droplet irradiation ultraviolet radiation of the UV curing type of dielectric surface, and the use of the type that this ink droplet is cured The ink-jet printer of UV China ink.
Claims (5)
1. ink-jet printer that uses the UV China ink, it is to UV ink droplet irradiation ultraviolet radiation, and this UV ink droplet is solidified at surface of print media, on this surface of print media, print image or literal that the arrangement by a plurality of UV ink dots constitutes, described UV ink droplet ejects from the ink jet-print head that relatively moves above the print media that is loaded on the cylinder towards the X-Y direction with the cylinder surface almost parallel, and, it is characterized in that attached on the surface of print media:
Luminescence-utraviolet body attached to the UV irradiation unit of the UV ink droplet irradiation ultraviolet radiation of aforementioned surface of print media has been used the display unit of UVLED or UVLED.
2. according to the described ink-jet printer that uses the UV China ink of claim 1, it is characterized in that, be provided with the control device that the electric current of the display unit that is supplied in aforementioned UVLED or UVLED is increased and decreased control, adjust the luminescence-utraviolet intensity and the luminescence-utraviolet time of the display unit of moment of luminescence-utraviolet of display unit of UVLED or UVLED and UVLED or UVLED by this control device.
3. according to the ink-jet printer of the described use of claim 1 UV China ink, the luminescence-utraviolet body of aforementioned UV irradiation unit has used the array element of UVLED, it is characterized in that:
Be arranged on the display unit of aforementioned UVLED and penetrate roughly ultraviolet a plurality of each UVLED of equivalent, with the same plane of aforementioned cylinder surface almost parallel on, be configured in respectively on each summit of the onesize positive triangle of mutually seamlessly arranging, so that the distance between this each adjacent UVLED is for uniformly-spaced.
4. according to the ink-jet printer of the described use of claim 1 UV China ink, it is characterized in that having
Sniffer and adjusting device,
Ultraviolet aforementioned UVLED is taking place or is being arranged in the display unit of UVLED and penetrates at least more than one the temperature of UVLED among ultraviolet a plurality of UVLED of isodose roughly in described detection;
Described adjusting device according to by this detection to the variations in temperature of UVLED, the electric energy that supplies to this UVLED or be arranged in a plurality of each UVLED on the display unit of UVLED is increased and decreased, make this UVLED or be arranged in the ultraviolet amount of radiation that a plurality of each UVLED on the display unit of UVLED penetrate, be not subjected to this UVLED or be arranged in the influence of temperature variation of a plurality of each UVLED on the display unit of UVLED and keep certain.
5. according to the ink-jet printer of the described use of claim 1 UV China ink, it is characterized in that having
Cooling device, ultraviolet aforementioned UVLED is to taking place or be arranged in the display unit of UVLED and penetrate roughly that ultraviolet a plurality of each UVLED of isodose cool off in it, keeps certain thereby make this UVLED or be arranged in the ultraviolet amount of radiation that a plurality of each UVLED on the display unit of UVLED penetrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP158917/2003 | 2003-06-04 | ||
| JP2003158917A JP2004358769A (en) | 2003-06-04 | 2003-06-04 | Ink-jet printer using uv ink |
| JP391597/2003 | 2003-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1798655A true CN1798655A (en) | 2006-07-05 |
| CN100509398C CN100509398C (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800148840A Expired - Fee Related CN100509398C (en) | 2003-06-04 | 2004-05-21 | Ink jet printer using UV ink |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004358769A (en) |
| CN (1) | CN100509398C (en) |
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| Publication number | Publication date |
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| CN100509398C (en) | 2009-07-08 |
| JP2004358769A (en) | 2004-12-24 |
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